Cycle-crank-hanger bracket



June 2. 192s. Y l 1,540,408

J. M. L ONN -CYCLE CRANK HANGER BRACKET l Filed my e. 1924 Patented June 2, 1925.

UNIT-ED STATES 1,540,408 PATENT OFFICE.v

JULIUs M. LoNN, or LAPORTE, INDIANA, AssIGNoR To GREAT WESTERN MANUFAC- TURING COMPANY, or LAroRTE, INDIANA, A CORPORATION `E INDIANA.

CYCLE-CRANKHANGER BRACKET.

Application filed July 9,

To all wiz/0m it may concern.'

Be it known that I, JULIUs M. LoNN, a citizen of the United States, residing at Laporte, in the County of La Porte andState of Indiana, have invented a new and useful Improvement in Cycle-Crank-Hanger Brackets, of which the following is a speci- 'lication rIlhe present invention is an improvement on the construction which forms the subject of Letters Patent No. 1,101,131, dated June 2,3, 1914, to E. J. Lonn, and while it `has 'the same general object as that of the patented construction, namely that of strengthening the fitting and therefore the frame by providing the oint, involving the nipple, sleeve and tube members, with three thicknesses of metal, it relates particularly to those members of the crank-hanger bracket, and has for its immediate objects simplification and material reduction of the manufacturing cost over providing the bracketwith the particular joint shown and described in the aforesaid patent.

Every such joint must be rendered flush and smooth by careful hand-filing preparatory to enalneling the frame, and this filing operation is easily performed where the joint is readily accessible for the purpose. 'The joints ou the crank-hanger bracket, however, are difficult of access for the filing purpose, and render the operation relatively slow, arduous and expensive; and in these times of keen competition in the bicycle business, a saving of approximately twenty-live cents1 which is the cost of .tiling bracket-joints of the patented construction, is an important item, and .this saving is afforded by my improvement, hereinafter described and illustrated in the accompanying drawing, in which- Figure 1 is an end view of a crank-hanger bracket showing a broken portion of one of the tubualr cycle-frame bars applied there to in accordance with my improvement, but with a part of its lower end broken away and sectioned to display my joint-structure;

Figure 2 is a section on line 2, Figure 1, and Y Figure 3 is an enlarged broken view in elevation of the tubular frame-bar with its lower-end portion broken away and sectioned to show the internally chamfered eX-' tremity thereof.

The bracket-barrel 4 is formed with nip- 1924.' serial Na 725,030,

ples 5 projecting, as usual, from about open- Y facilitating the telescopic application there# to of a frame-tube 7, V"is constricted about its inner end to form a flat annular shoulder' 8 from which. ay neck 9 extends. Y Upon inserting theneck-end ofthe sleeve through a nipple 5, its end-portion then projectinginto the barrel is spread or clenched Iinto contactwith the inner surface of the barrel-wall, as represented at 9a in'Fig`.v 2, to rigidly and securely fasten thepsleeve in place. This procedure recesses theV neck and binds the Hat-faced sleeve-shoulder 8 in abutting Contact with the similar shoulderlike face of the nipple, with the neck-recess closely fitting about and embracing the inner surface of the nipple.

Y The vframe-tube 7 is shown, at 7L in Fig. 8, with its lower extremity internally cham;

fercd for the purpose hereinafter explained.

To unitethe tube with the bracket, the tube is forced, as by driving, over the sleeve, thereby bringing against the barrel-surface the chamfered extremity and spreading the knife-edge of the latter to conform to the rounded contour of the barrel-surface longitudinally"V thereof on two diametricallyopposite sides of the tubesmeeting therewith, as represented at 10 in Figs. 1 and 2.

The oint, thus formed with the desirable.

three thicknesses of metal and involving the abutting flatfaced shoulders, avoids the neck and the sloping shoulder thereof as in the aforesaid patented construction, producing the undesirable joint-formation requiring to be smoothened by costly handdiling, as hereinbefore explained; while by my im proved method of forming the joint, it is so smooth or flush as to require no filing or treatment preparatory to enameling the frame. f

As will be understood, the tube may be secured, at its junction withthe barrel, in a usual manner, as by riveting and brazing, or welding and brazing.

I Claim:

k1. A` cycle crank-hanger bracket comprising, in combination, a barrel having an opening therein the wall of said opening being turned to form a nipple, a reinforcing and frame-tube-receiving sleevev having a lil abutting against the inner face of the nipple and Hush therewith, said sleeve being spread outwardly at its inner-end to 'bear against.

the internal surface of the barrel, whereby to clanip together said shoulder and nipple in abutting relation, and a frame-tube the inner end of Which contacts With the outer face of the nipple and Withrthe external surface of the barrel thereby forniing triple thickness of metal at the joint between'said tube and barrel. n i i j 2. A cycle crank-,hanger bracket comprising, in combination, a barrel having an yopening therein, the Wall of said opening being turned to forni a nipple, areinforeing and fraine-tube-receiving sleeve having a reduced inner-end portion and a shoulder abutting against the nipple and flush there- With, said sleeve being spread'outwardly at its inner-end to bearfagainst the internal surface of the barrel, whereby to cla-nip together said shoulder and nipple inabutting relation, and arfrarne-tube `into which the outer end of saidpsleeve extends With the inner end of said tube contacting with the external surfaceof the barrel.

3. A cycle' crank-hanger bracket comprising, in combination, a barrel having an opening therein, the wall of said opening being turned to forni a nipple, a reinforcing and franie-'tube-reeeiving sleeve having a reducedinnerend portion and a shoulder abutting against the nipple and flush therewith, said sleeve being spread outwardly at its inner-end to bear against the internal surface yof the barrel, whereby to clamp together said shoulder and nipple in abutting relation,V and a frame-tube into which the outer end of said sleeve extends with the inner end of said tube contacting with the external surfaceof the barrel, said ltube bcing internally chainfered at its lower end to afford aVlrnie-edge adapted to be spread to conform tothe rounded exterior surface -oii the barrel.

JULrUs M. Loan.L 

